diff --git a/tox.ini b/tox.ini
index c83086222b..6c97c6c185 100644
--- a/tox.ini
+++ b/tox.ini
@@ -139,7 +139,9 @@ commands = oslo_debug_helper {posargs}
 [testenv:releasenotes]
 allowlist_externals =
   rm
-deps = -r{toxinidir}/doc/requirements.txt
+deps =
+  -c{env:TOX_CONSTRAINTS_FILE:https://releases.openstack.org/constraints/upper/master}
+  -r{toxinidir}/doc/requirements.txt
 commands =
   rm -rf releasenotes/build
   sphinx-build -a -E -W -d releasenotes/build/doctrees --keep-going -b html releasenotes/source releasenotes/build/html